Senior HPC Networking Engineer

Mirantis•Remote, USA

12d•Remote

About The Position

We are seeking a highly skilled Senior HPC Networking Engineer to design, deploy, manage, and troubleshoot high-performance networking environments. The ideal candidate will have deep expertise in InfiniBand technologies, strong general networking knowledge, and hands-on experience with Fortinet solutions. You will play a critical role in ensuring the performance, reliability, and scalability of HPC infrastructure. You will actively troubleshoot and resolve daily customer incident tickets to keep massive GPU training runs moving. Build, operate, and scale next-generation GPU infrastructure: You will be hands-on on the front lines driving daily triage, incident resolution, and SLA management for the world’s most advanced NVIDIA clusters, InfiniBand/RoCE fabrics, and AI workloads. Build the playbook, then grow into the platform: Designed for engineers energized by standing up new operations from the ground up, this role offers a direct trajectory from operationalizing bare-metal clusters to driving platform and AI capabilities as we scale.

Requirements

5+ years of experience in network engineering, with a focus on HPC or data center environments.
Strong hands-on experience with InfiniBand technologies (e.g., Mellanox/NVIDIA).
Solid understanding of networking fundamentals: TCP/IP, routing protocols (BGP, OSPF), VLANs, QoS, and network design.
Proven experience deploying and troubleshooting Fortinet solutions (FortiGate, FortiManager, VPNs, firewall policies).
Experience with network performance analysis and troubleshooting tools.
Familiarity with Linux systems and scripting for automation (e.g., Bash, Python).
Strong analytical and problem-solving skills.
Strong communication and collaboration skills.
Ability to work independently and handle complex technical challenges.
Detail-oriented with a proactive approach to problem-solving.

Nice To Haves

Experience with large-scale HPC clusters or AI/ML infrastructure.
Knowledge of RDMA, MPI, and low-latency networking concepts.
Certifications such as FCSS/FCNSP (Fortinet), CCNP/CCIE, or equivalent.
Experience with automation and Infrastructure as Code tools (e.g., Ansible, Terraform).

Responsibilities

Design, deploy, and maintain high-performance network infrastructures for HPC environments, with a strong focus on InfiniBand fabrics.
Troubleshoot complex network issues across InfiniBand and Ethernet environments, ensuring minimal downtime and optimal performance.
Manage and optimize InfiniBand components, including switches, HCAs, subnet managers, and fabric configurations.
Perform performance tuning, monitoring, and capacity planning for HPC networking systems.
Implement and maintain network security using Fortinet solutions (FortiGate, FortiManager, FortiAnalyzer).
Diagnose and resolve issues related to routing, switching, latency, and throughput across hybrid network environments.
Collaborate with compute, storage, and platform teams to support HPC workloads and cluster operations.
Develop and maintain documentation for network architecture, configurations, and operational procedures.
Participate in on-call rotations and provide escalation support for critical incidents.
Lead or contribute to network upgrades, migrations, and new deployments.
Actively troubleshoot and resolve daily customer incident tickets to keep massive GPU training runs moving.
Build, operate, and scale next-generation GPU infrastructure.
Drive daily triage, incident resolution, and SLA management for NVIDIA clusters, InfiniBand/RoCE fabrics, and AI workloads.
Build the playbook, then grow into the platform.
Operationalize bare-metal clusters to driving platform and AI capabilities as we scale.